Chemical and Physical Changes

Front

A chemical change _____________ the identity of the substance.

Back

changes

Front

Which of these examples is a physical change?

Back

Examples include melting ice, boiling water, and dissolving sugar.

Front

Water boils at 100 degrees Celsius. Is this a physical change or a chemical change?

Back

Physical Change

Front

Which example best describes a physical change?

Back

An ice cube melting.

Front

Which process is a sign of a chemical change?

Back

A rotting potato gives off a bad smell.

Front

Define a chemical change.

Back

A process that alters the chemical composition of a substance.

Front

Define a physical change.

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What is an example of a physical change?

Back

Dissolving salt in water.

Front

What are indicators of a chemical change?

Back

Color change, temperature change, gas production, and formation of a precipitate.